a disc rotating about its axis from rest , aquires the angular speed 100rev/s in 4 sec. the angle rotated by it during these 4 sec.( in radian) is

ans: 400

plz xplain how?

Question

a disc rotating about its axis from rest , aquires the angular
speed 100rev/s in 4 sec the angle rotated by it during these 4 sec
( in radian) is
ans: 400
plz xplain how?

Abhay Kumar · Accepted Answer

ωinitial= 0 rad/secωfinal= 100*2π rad/sect = 4 secθ=??α=ωfinal-ωinitial  t= 50π rad/secθ= ωinitial*t +1/2*α*t2θ= 1/2*α*t2 = 1/2*50π*42 = 400 π radians

a disc rotating about its axis from rest , aquires the angular speed 100rev/s in 4 sec. the angle rotated by it during these 4 sec.( in radian) is ans: 400 plz xplain how?

a disc rotating about its axis from rest , aquires the angular speed 100rev/s in 4 sec. the angle rotated by it during these 4 sec.( in radian) is

ans: 400

plz xplain how?